Feat: use ffmpeg wasm (#177)

* add ffmepg wasm

* refactor whisper config

* refactor ffmpeg config

* remove depected codes

* refactor model download

* decouple whipser & ffmpeg when transcribe

* do not always toast not found error

* ffmpeg works in renderer

* transcode in renderer & transcript in main

* improve transcode

* refactor

* remove ffmpeg check

* fix whisper config check

* update whisper check

* enable SharedArrayBuffer

* remove ffmpeg setting

* fix UI

* handle ffmpeg not ready

* may create issue when whisper check failed

* upgrade deps

* hide ffmpeg setting if not ready

* hide record button when not in region

enjoy/src/main.ts

@@ -14,6 +14,8 @@ log.errorHandler.startCatching();
 // Fix "getRandomValues() not supported"
 global.crypto = crypto;
 
+app.commandLine.appendSwitch('enable-features','SharedArrayBuffer')
+
 // Handle creating/removing shortcuts on Windows when installing/uninstalling.
 if (require("electron-squirrel-startup")) {
   app.quit();